What kind of garbage should we sell you directly through Twitter?

Hachette Book Group is selling three titles directly through its authors’ Twitter accounts. The trial run includes three authors with substantial fan bases: astronaut Chris Hadfield, singer Amanda Palmer, and, of course, The Onion. Books sold through Twitter include additional materials, like a note from the author, a signed photo (from space!), or notecards that feature The Onion‘s previous covers.

The majority of web traffic for many sites is social media, so it’s no surprise that publishers are eager to forgo links and sell directly from users’ Twitter streams. New buy buttons have worked for some musicians, who sell merch and albums directly through their Twitter accounts. A company called Gumroad is working with Hachette to offer titles directly to consumers.

Melville House isn’t selling books through Twitter yet (and we don’t have any cool photos signed by astronauts to offer at the moment), but if we start selling to you directly, what kind of nonsense should we bundle with your purchases?